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7 March 2022 Extended depth of field in OCT by self-imaging wavefront division with the mirror tunnel
Conor J. Sheil, Andreas Wartak, Graham L. C. Spicer, Guillermo J. Tearney
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Proceedings Volume PC11937, Endoscopic Microscopy XVII; PC1193704 (2022) https://doi.org/10.1117/12.2609900
Event: SPIE BiOS, 2022, San Francisco, California, United States
Abstract
A component used to extend the depth of field for compact endoscopic OCT probes is the mirror tunnel. BeamLab software, which uses the beam propagation method, was used to simulate the mirror tunnel probes and quantify depth of field extension and lateral resolution. Considering the exit face of the mirror tunnel as an extended object decouples the physical operation of the mirror tunnel from the focusing optics, which reduces the optimization parameter space. Lateral resolution performance was found to depend heavily on the metric chosen, with strong side lobes reducing image contrast; hence, the optimization merit function should be carefully chosen.
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Conor J. Sheil, Andreas Wartak, Graham L. C. Spicer, and Guillermo J. Tearney "Extended depth of field in OCT by self-imaging wavefront division with the mirror tunnel", Proc. SPIE PC11937, Endoscopic Microscopy XVII, PC1193704 (7 March 2022); https://doi.org/10.1117/12.2609900
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KEYWORDS
Mirrors
Optical coherence tomography
Focus stacking
Wavefronts
Image resolution
Beam propagation method
Endoscopy
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